OK,
what do you do here for grounding? The utility power box is on the addition
with no exposed #6 wire; the wires run in the walls. The dish would mount
on the antenna tower nicely, but it's 25 feet from the utility box.

View
showing tower and utility box. The addition (left side on this view) sits
on a slab. The main house sits on a crawl space. The crawl space door was
inside the addition where the old exterior wall is.

Customer
requested that I put the new dish in place of the old DTV dish. I explained
that his old dish wasn't grounded. Although the location was good for one
receiver (right below it in the LR), I would have had to route all cables
back to a grounding point. The second receiver was going right behind the
antenna tower.

I
eventually found an 8" length of exposed #6 copper wire in the crawl
space running up to the power panel inside the house. So I routed the cables
from the dish on the tower, to the ground wire, and back to the receivers.